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Q:

The area of a square is equal to the area of a rectangle. The length of the rectangle is 5 cm more than a side of the square and its breadth is 3 cm less than the side of the square. What is the perimeter of the rectangle ?

A) 15 cm	B) 18 cm
C) 34 cm	D) 26 cm

Answer & Explanation Answer: C) 34 cm

Explanation:

Let the side of the square be 's' cm

length of rectangle = (s+5) cm

breadth of rectangle = (s-3)cm

(s+5) (s-3) =

$s^{2}$ - 5s - 3s - 15 = $s^{2}$

2s = 15

Perimeter of rectangle = 2(L+B) = 2(s+5 + s–3) = 2(2s + 2)

= 2(15 + 2) = 34 cm

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Filed Under: Area
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Q:

A can complete 9/10 part of a work in 31 days. After that, with the help of B he can complete the remaining work in 4 days. In how many days will A and B together can complete that work ?

A) 36	B) 40
C) 42	D) 38

Answer & Explanation Answer: B) 40

Explanation:

Remaining work = 1 - 9/10 = 1/10

=> A & B together completes 1/10 of work in 4 days

=> 1 work can completed in ------ ? days

Let it be x days

=> $\frac{4}{\frac{1}{10}} = \frac{x}{1}$

=> x = 40 days.

Hence, A & B together can complete the work in 40 days.

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Filed Under: Time and Work
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Q:

Which country has been ranked number one in pollution related deaths ?

A) Australia	B) Indonesia
C) India	D) Japan

Answer & Explanation Answer: C) India

Explanation:

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Filed Under: General Awareness
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Q:

What will come in place of question mark(?) in the following number series ?

6859 5832 ? 4096 3375

A) 4589	B) 4913
C) 5013	D) 5169

Answer & Explanation Answer: B) 4913

Explanation:

The given series follows a pattern that,

19 x 19 x 19 = 6859

18 x 18 x 18 = 5832

17 x 17 x 17 = 4913

16 x 16 x 16 = 4096

15 x 15 x 15 = 3375

So, the missing number in the given series = 4913

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Filed Under: Number Series
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Q:

Which country have declared 2020 'Unique Year for Space Sector' ?

A) United Arab Emirates	B) England
C) USA	D) India

Answer & Explanation Answer: A) United Arab Emirates

Explanation:

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Filed Under: General Awareness
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Q:

Indian-American girl won 2017 Young Scientist Challenge for water contamination detection device. What is her name ?

A) Kavita Kumari	B) Gitanjali Rao
C) Hetal Rao	D) Savita Sharma

Answer & Explanation Answer: B) Gitanjali Rao

Explanation:

Gitanjali Rao, an 11-year-old Indian-American schoolgirl, was named as "America’s top young scientist" for inventing a cost-effective, quick lead-contamination detector in water. The seventh-grade student was inspired by the large-scale lead contamination in water in Flint, Michigan, that came to light recently.

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Filed Under: Famous Personalities
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Q:

What will come in place of the question mark (?) in the following question ?

52.5% of 800 + 30.5% of 2800 = ? + 87.30

A) 1096.30	B) 1226.70
C) 1124.20	D) 1186.70

Answer & Explanation Answer: D) 1186.70

Explanation:

52.5% of 800 + 30.5% of 2800 = ? + 87.30

420 + 854 - 87.30 = ?

1274 - 87.30 = ?

? = 1186.70

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Filed Under: Percentage
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Q:

In the following options, select the one which is different from the other three ?

A) Concentration	B) Concourse
C) Radiation	D) Confluence

Answer & Explanation Answer: C) Radiation

Explanation:

Radiation shows the property of spreading while the rest three shows concentration at a point.

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Filed Under: Analogy
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